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Dairy Cattle And Reproduction

Subjects : industries, dairy
Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. Provide nourishment for the developing sperm






2. Milk is 15% ________ and 85% __________.






3. Allows extension of penis without fibro-elastic penis






4. The more stressed out the male is - the less sperm he is going to produce






5. 24 hours before end of estrus cycle






6. So when offspring are born - there is more food to be found for energy stores and fat deposits IN THE SPRING






7. Constitute 50-90% of the volume of the ejaculate. (3 glands total: seminal vesicles - prostate gland - cowper's gland)






8. Boars and stallions-> deliver semen directly into the cervix. bulls and rams-> deliver semen into the vagina.






9. Largest dairy cow - largest udder - highly vascular - eat 40-50% dry matter (eat alot) - most total butterfat






10. What about the sperm for a bull which has been castrated but still has testicles?






11. 14-19 (17) days






12. Implies the amount of estrogen production






13. ~305 days (altough often longer due to breeding difficulties)






14. Scar tissue plugs up chambers of udder






15. Microscopic - make sure not sterile - very few bulls are actually tested






16. To remove/separate testicles from animal's body before animal reaches puberty






17. Important 'landmark' during palpation






18. (male) Primary sex organ - produces sperm (male gamete) and male sex hormones - 2 total






19. Castration tool that uses a band around the testicles which cuts off circulation and eventually the testicles fall off






20. 114 days






21. Superior genes are _______ to multiply






22. Standing to be mounted (last one able to notice); mounting other animals; social behavior-restless - gregarious - activity - vocalizing; frequent urination; mucous discharge






23. (switzerland) 2nd in size and milk production - most muscle -






24. (male) pushes the testes upward toward the body for warmth or protection






25. Way to know everything is alright with the breeding male






26. Gonadotropic (GnRH) is (FSH and LH). Follical Stimulating (FSH) and Lutinizing Hormone (LH).






27. Look for infection - split - and rupture of the penis






28. 1. reproduction - 2. mastitis/udder problems - 3. low milk production - 4. soundness/poor feet and legs (living on concrete)






29. Contains and regulates the temp of the testes for sperm production






30. Standing to be mounted (last one able to notice); mounting other animals; social behavior-restless - gregarious - activity - vocalizing; frequent urination; mucous discharge






31. Can produce 200 calves naturally (~100 bulls) - top 1-2% will grade like him. everything left to chance if no AI performed






32. Organ of copulation - provides passageway for semen and urine - muscular organ characterized especially by its spongy - erectile tissue that fills with blood






33. Implies the amount of estrogen production






34. 1. sperm is not implanted in egg until hours after breeding. 2. fetal growth has not yet finished.






35. ~60 days before calving






36. 1. visual evaluation - 2. scrotal circumference - 3. penis and prepuce observation - 4. rectal palpation - 5. libido test - 6. semen evaluation






37. Parturition is controlled by...






38. 1. sperm is not implanted in egg until hours after breeding. 2. fetal growth has not yet finished.






39. Castration tool which clamps down on the vans deferens. causes the sperm to not reach the penis to be ejaculated






40. Castration tool which clamps down on the vans deferens. causes the sperm to not reach the penis to be ejaculated






41. Sperm is produced here






42. When she is pregnant in her last trimester because she needs the energy to carry around and deliver the calf. and when the calf is born because the cow needs the fat to be deposit it into her milk for the calf's energy stores.






43. Why does estrus happen before ovulation?






44. Duct which connects epididymis to urethra of the penis. transports sperm at ejaculation. cut to sterilize male.






45. Prevent the cow from getting an infection from the calve






46. Cleans and lubricates the urethra ahead of the sperm. (if not - the urine in the urethra has a high salt content and would cause sperm to rupture and die)






47. Cycle that lasts weeks (ovulation->hormone cycles->ovulation)






48. Examine accessory glands - also to know how big the pelvic opening is->heritable->relates to how much dystocia that bull's daughter has






49. Animal which has been castrated after puberty






50. Scar tissue plugs up chambers of udder